There certainly are hackable things flying over your head. However, with your 15m dish men in black suits will zero-in on your location in a flash, and you'll be behind bars before you know it - probably before you can focus on the target out on space. So I'd suggest palling around with the chinese and russians and see if they'll provide you with some AA if you plan on doing that. Like anything else these days, you use cut-and-dried old fashion hacking techniques to gain access to the computer systems. There was just an article on this site about the russians hacking into some sewage plant. They didn't hack the valves and equipment directly, they guessed a password and got into the computers controlling the whole thing.